diff --git a/fabric/build.gradle.kts b/fabric/build.gradle.kts
index 1c2eb8a0..b37892ea 100644
--- a/fabric/build.gradle.kts
+++ b/fabric/build.gradle.kts
@@ -85,6 +85,7 @@ tasks.sourcesJar {
 modrinth {
     versionName.set("Bingo ${rootProject.version} for Fabric")
     uploadFile.set(tasks.remapJar)
+    additionalFiles.add(tasks.sourcesJar)
     loaders.add("fabric")
     dependencies {
         required.project("fabric-api")
diff --git a/neoforge/build.gradle.kts b/neoforge/build.gradle.kts
index ca436423..6a992974 100644
--- a/neoforge/build.gradle.kts
+++ b/neoforge/build.gradle.kts
@@ -71,5 +71,6 @@ tasks.sourcesJar {
 modrinth {
     versionName = "Bingo ${rootProject.version} for NeoForge"
     uploadFile.set(tasks.remapJar)
+    additionalFiles.add(tasks.sourcesJar)
     loaders.add("neoforge")
 }